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Zynq Ult MPSoC SOM Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.8.1.8
I2C Interface
The Zynq Ult MPSoC SOM supports one I2C interface on Board to Board Connector2. The I2C0 module of
MPSoC
’s
PS is used for I2C interface through MIO pins and compatible with the standard NXP I2C bus protocol. It
supports standard mode with data transfer rates up to 100kbps and Fast mode with data transfer rates up to
400kbps. It can function as a master or a slave in a multi-master design. The master can be programmed to use both
normal (7-bit) addressing and extended (10-bit) addressing modes. Since flexible I2C standard allows multiple
devices to be connected to the single bus, I2C0 interface is also connected to On-SOM PMIC with I2C address 0x58 in
the Zynq Ult MPSoC SOM. Also one more I2C interface (I2C1) can be taken out on Board to Board
Connector2 which is multiplexed with PS GPIOs.
For more details on I2C Interface pinouts on Board to Board Connector2, refer the below table.
B2B-2
Pin No
B2B Connector2
Pin Name
SoC Ball Name/
Pin Number
Signal Type/
Termination
Description
46
I2C0_SDA(PS_MIO11_500)
PS_MIO11_500/
G18
IO, 1.8V OD/
4.7K PU
I2C0 data.
48
I2C0_SCL(PS_MIO10_500)
PS_MIO10_500/
F18
O, 1.8V OD/
4.7K PU
I2C0 clock.
38
PS_MIO25_500
PS_MIO25_500/
B18
IO, 1.8V LVCMOS/
4.7K PU
General Purpose Input/Output.
Same pin can be used as I2C1 data.
70
PS_MIO24_500
PS_MIO24_500/
A18
O, 1.8V LVCOMS/
4.7K PU
General Purpose Input/Output.
Same pin can be used as I2C1 clock.
2.8.1.9
JTAG Interface
The Zynq Ult MPSoC SOM supports JTAG interface on Board to Board Connector2. The Zynq Ult
MP
SoC’s
PS and PL share a common set of JTAG pins and each have their own TAP controller which are chained
together inside the Zynq Ultrascale MPSoC. These JTAG interface signals are also connected to on-board JTAG
connector.
For more details on JTAG Interface pinouts on Board to Board Connector2, refer the below table.
B2B-2
Pin No
B2B Connector2
Pin Name
SoC Ball Name/
Pin Number
Signal Type/
Termination
Description
27
PS_JTAG_TDI
PS_JTAG_TDI/
L20
I, 1.8V LVCMOS/
4.7K
JTAG Test Data Input.
29
PS_JTAG_TMS
PS_JTAG_TMS/
L21
I, 1.8V LVCMOS/
4.7K
JTAG Test Mode Select.
31
PS_JTAG_TCK
PS_JTAG_TCK/
L19
I, 1.8V LVCMOS/
4.7K
JTAG Test Clock.
33
PS_JTAG_TDO
PS_JTAG_TDO/
M20
O, 1.8V LVCMOS JTAG Test Data Output.